The Nationals announced their National League Division Series roster Friday afternoon, a few hours before Game 1 against the Cubs begins at Nationals Park.

That roster included 20-year-old Victor Robles and fellow rookie outfielder Brian Goodwin, who had been thought to be something of an either-or pair in the final weeks of September. Goodwin has not played in a major league game since injuring his groin in August. Robles has 24 major league at-bats, but boasts speed that could prove series-altering and premier defense for late-game situations. With both Robles and Goodwin on the roster, the Nationals will carry a six-man bench and a seven-man bullpen.

“We were weighing the need for speed, and also the need for defense,” Nationals Manager Dusty Baker said. “And especially if I have to run for Wieters or run for Lobaton. And we were kind of left-handed strong on the bench.”

Despite public uncertainty about Max Scherzer’s hamstring, the Nationals decided against taking a long reliever such as A.J. Cole or Edwin Jackson. That bullpen will consist of left-handers Sean Doolittle, Oliver Perez, Sammy Solis and Enny Romero and right-handers Ryan Madson, Brandon Kintzler and Matt Albers. Perez, Solis and Albers have pitched multiple-inning outings this season, meaning the Nationals could turn to some combination of them should a starter stumble.

“We know they have quite a few lefties, and our lefties are pretty good at getting righties out, and we kept the best bullpen that we thought for this series,” Baker said. “It’s always tough to leave guys off, especially guys that have helped you get here all year.”

Their bench, meanwhile, contains two left-handed hitters, Goodwin and Adam Lind; two right-handed hitters, Robles and Howie Kendrick; and two switch-hitters, Wilmer Difo and Jose Lobaton. That bench is balanced and loaded with pinch-running options, as Robles has elite speed, and Difo and Goodwin are also base-stealing threats.

The rest of the roster is as expected, with the regulars and four starters — Scherzer, Stephen Strasburg, Gio Gonzalez and Tanner Roark — all active in the first round. Find a complete list of the Nationals’ NLDS roster below.